Your probably going to want a custom built one to the specific dimensions you need to make it fits right.
I was actually thinking of getting the Mazdaspeed header and then putting a cat on it with a custom exhaust to fit the rest. That is how most Hondas run and pass emissions, so it would make sense that it would pass that way.
Sometimes the "good cars" like the Sport 20 don't come over because of insurance comapnies, not necessarily because of emissions issues. Although the government will use the "Emissions" excuse. And sometimes, the car companies just don't send them over because they don't want to spend the money to make them "street legal" for the U.S...IMO
